<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Vue 测试实例 - 菜鸟教程(runoob.com)</title>
<script src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>
</head>
<body>
<div id="app">
	<input v-model="type">
	<button @click='seen=!seen'>切换</button>
	<div v-if="type==='A'">
      A
	</div>	
	<div v-else-if="type === 'B'">
	  B
	</div>
	<div v-else-if="type === 'C'">
	  C
	</div>
	<div v-else>
	  Not A/B/C
	</div>

	</div>
<script>
new Vue({
  el: '#app',
  data: {
    type: ''
  }
})
</script>
</body>
</html>